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authorFrederic Weisbecker <fweisbec@gmail.com>2011-05-23 13:06:28 +0200
committerIngo Molnar <mingo@elte.hu>2011-05-23 13:22:57 +0200
commit998bedc8c56c6869de457c845cbd328592e5e82e (patch)
treec269208d64edc1a535382601a8904e0eb96a1fcc /drivers/mtd/Makefile
parent4eec42f392043063d0f019640b4ccc2a45570002 (diff)
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perf tools: Fix ommitted mmap data update on remap
Commit eac9eacee16 "perf tools: Check we are able to read the event size on mmap" brought a check to ensure we can read the size of the event before dereferencing it, and do a remap otherwise to move the buffer forward. However that remap was ommitting all the necessary work to update the new page offset, head, and to unmap previous pages, etc... To fix this, gather all the code that fetches the event in a seperate helper which does all the necessary checks about the header/event size and tells us anytime a remap is needed. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1306148788-6179-3-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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